<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <!-- <img src="../assets/logo.png"/>-->
      </div>
      <el-form ref="loginFormRef" :rules="loginFormRules" :model="loginForm" label-width="0px" class="login_form">
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登陆</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
  export default {
    name: 'Login',
    data () {
      return {
        loginForm: {
          username: 'admin',
          password: '123456'
        },
        //表单的验证规则
        loginFormRules: {
          //password 与 prop="password" 对 loginForm.username 三个需要相同
          username: [
            {
              required: true,
              message: '请输入用户名',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 10,
              message: '长度在 3 到 10 个字符',
              trigger: 'blur'
            }
          ],
          password: [
            {
              required: true,
              message: '请输入用登陆密码',
              trigger: 'blur'
            },
            {
              min: 6,
              max: 15,
              message: '长度在 6 到 15 个字符',
              trigger: 'blur'
            }
          ]
        }
      }
    },
    methods: {
      resetLoginForm () {
        this.$refs.loginFormRef.resetFields()
        this.loginForm.username = ''
        this.loginForm.password = ''
      },
      login () {
        this.$refs.loginFormRef.validate(async (valid, obj) => {
          if (!valid) return
          //将返回结果中的data属性重命名res
          const { data: res } = await this.$http.post('login', this.loginForm)
          if (res.meta.status != 200) return this.$message.error(res.meta.msg)
          this.$message.success(res.meta.msg)
          window.sessionStorage.setItem('token', res.data.token)
          this.$router.push('/home')
        })
      }
    }
  }
</script>

<style lang="less" scoped>
  .login_container {
    height: 100%;
    background-color: #2b4b6b;
  }

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
      width: 130px;
      height: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background: #fff;
      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }

    .login_form {
      position: absolute;
      bottom: 0px;
      width: 100%;
      padding: 0 20px;
      box-sizing: border-box;

      .btns {
        display: flex;
        justify-content: flex-end;
      }
    }
  }
</style>
